nested climbing stools consist of set of four stools which nest for storage. Tops are covered with corrugated rubber tread. Stools measure: 10″w x 12″l x 2″h, 12″w x 14″l x 4″h, 14″w x 18″l x 6″h, 16″w x 20″l x 8″h. Weight capacity: 250 lbs.